Related Experiment Video
Updated: Aug 13, 2026

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
Published on: August 18, 2016
Coronary spasm induced by dipyridamole during a myocardial scintigraphy
P Weinmann1, D Le Guludec, J L Moretti
1Service de Biophysique et Médecine Nucléaire, Hôpital Avicenne, Bobigny, France.
Abstract:
A 59-year-old male underwent a dipyridamole myocardial scintigraphy. During dipyridamole infusion, a marked ST-segment elevation was observed in the inferior leads. After aminophylline injection, a short burst of ventricular tachycardia occurred, then the ST-segment elevation disappeared. The myocardial scintigraphy was consistent with myocardial ischemia of the inferior wall. The coronary angiography revealed no significant coronary lesion. Coronary spasm induced by dipyridamole remained the most probable mechanism for this complication.
Related Concept Videos
Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...
Imaging Studies for Cardiovascular System IV: CMRI
Imaging Studies for Cardiovascular System V: CT
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Acute Coronary Syndrome I: Introduction
Acute Coronary Syndrome III: Diagnostic Studies

